CN112267955A - Cantilever force bearing device for combined spray pipe - Google Patents
Cantilever force bearing device for combined spray pipe Download PDFInfo
- Publication number
- CN112267955A CN112267955A CN202010988326.5A CN202010988326A CN112267955A CN 112267955 A CN112267955 A CN 112267955A CN 202010988326 A CN202010988326 A CN 202010988326A CN 112267955 A CN112267955 A CN 112267955A
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- Prior art keywords
- force
- bearing
- frame
- adjusting plate
- plate
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/06—Varying effective area of jet pipe or nozzle
- F02K1/15—Control or regulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/002—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto with means to modify the direction of thrust vector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention provides a cantilever force-bearing device for a combined spray pipe, which comprises a middle adjusting plate left force-bearing frame, a middle adjusting plate right force-bearing frame, a first middle adjusting plate force-transmitting frame, a second middle adjusting plate force-transmitting frame and a third middle adjusting plate force-transmitting frame which are all conical in shape and fixedly connected with one another, wherein a force-bearing frame base body is formed after the middle adjusting plate left force-bearing frame, the middle adjusting plate right force-bearing frame, the first middle adjusting plate force-transmitting frame, the second middle adjusting; the awl bottom of the left bearing frame of middle regulating plate, the right bearing frame of middle regulating plate all sets up the binaural seat for with quick-witted casket fixed connection, the awl bottom of the regulating plate dowel frame sets up the monaural seat in the middle of the third, be used for with quick-witted casket fixed connection. The invention adopts the block-type force bearing and transmission components to jointly form a box-type frame structure, can carry out stepless regulation on the flow channel of the spray pipe through the hydraulic actuating mechanism, bears and transmits pneumatic thermal load under each limit state, and meets the use requirement of the engine on full envelope.
Description
Technical Field
The disclosure relates to the technical field of design of a bearing structure of a jet pipe of an aircraft engine, in particular to a cantilever bearing device for a combined jet pipe.
Background
The combined turbo-ramjet engine is an ideal assembling power for a reusable near space high-speed combat airplane in the future. The working mode conversion between the turbine and the stamping is a difficult and difficult technology for the development of the turbine stamping combined engine, and in order to ensure that the thrust coefficient and the total pressure recovery coefficient of the spray pipe in the full-envelope line meet the requirements, the future high-altitude high-Mach number turbine stamping combined engine necessarily adopts an adjustable middle adjusting plate structure. The profile of the middle adjusting plate is in a sharp cone shape and limited by space, the cam adjusting structure can only be arranged at the front end of the frame, the middle and rear sections are in cantilever structures, and the upper and lower surfaces of the cam adjusting structure respectively bear pneumatic thermal loads from the turbine and the stamping channel, so that the middle adjusting plate bearing structure bears huge bending moment, and the strength and rigidity design difficulty is very high.
At present, competitive research on the turbo-ramjet combined engine at home and abroad is basically in a key technology attack stage and a complete machine integration verification stage, so that a force bearing frame of an intermediate adjusting plate of a parallel-type combined spray pipe of the turbo-ramjet combined engine is not designed with a mature structure at present.
Disclosure of Invention
In view of this, the embodiment of the present disclosure provides a cantilever force-bearing device for a combined nozzle, and the device is specifically a cantilever force-bearing frame structure of an intermediate adjusting plate for variable-state adjustment of a parallel combined nozzle of a turbo-ramjet combined engine, and solves the problem of insufficient strength and rigidity of the intermediate adjusting plate by optimizing a force transmission path, so as to meet the requirement of a modal conversion function of the turbo-ramjet combined engine.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a cantilever force-bearing device for making up spray tube, includes middle regulating plate left side bearing frame, middle regulating plate right side bearing frame, the inboard of middle regulating plate left side bearing frame, middle regulating plate right side bearing frame sets up regulating plate force-transfer frame in the middle of first and second respectively, set up the middle regulating plate force-transfer frame in the middle of first and the second between the regulating plate force-transfer frame in the middle of the second, the appearance of middle regulating plate left side bearing frame, middle regulating plate right side bearing frame, first middle regulating plate force-transfer frame, second middle regulating plate force-transfer frame and third middle regulating plate force-transfer frame all is the toper, and fixed connection each other constitutes the bearing frame base member; the awl bottom of the left bearing frame of middle regulating plate, the right bearing frame of middle regulating plate all sets up the binaural seat for with quick-witted casket fixed connection, the awl bottom of the regulating plate dowel frame sets up the monaural seat in the middle of the third, be used for with quick-witted casket fixed connection.
The bearing frame further comprises an upper bearing plate and a lower bearing plate, wherein the upper bearing plate and the lower bearing plate are respectively fixed at the top and the bottom of the bearing frame base body.
Further, the awl bottom of the middle regulating plate right side bearing frame of middle regulating plate left side bearing frame, middle regulating plate right side bearing frame and third middle regulating plate power transmission frame all sets up cam adjustment mechanism, cam adjustment mechanism is including seting up the arc through-hole of middle regulating plate left side bearing frame, middle regulating plate right side bearing frame and third middle regulating plate power transmission frame awl bottom, set the cam in the arc through-hole, the cam passes through the drive arrangement drive, in order to adjust the inclination of bearing frame.
And the tail edges of the middle adjusting plate bearing frames are fixedly connected with the conical tops of the conical structures surrounded by the upper bearing plate, the lower bearing plate and the bearing frame base body respectively.
Furthermore, the tail edges of the bearing frames of the two adjacent middle adjusting plates are fixedly connected.
Furthermore, a plurality of through holes are formed in the tail edge of the bearing frame of the middle adjusting plate and used for fixing the heat insulation layer of the stamping channel and the turbine channel.
Furthermore, regulating plate power transmission frame in the middle of first middle regulating plate power transmission frame, second and regulating plate power transmission frame in the middle of the third are fishbone structure to the fishbone structure dislocation arrangement setting of regulating plate power transmission frame in the middle of first middle regulating plate power transmission frame, second and regulating plate power transmission frame in the middle of the third.
Furthermore, a plurality of reinforcing ribs are arranged on the middle adjusting plate left bearing frame and the middle adjusting plate right bearing frame.
The cantilever force bearing device for the combined spray pipe has the beneficial effects that:
1. the cantilever force-bearing frame structure related by the invention has reasonable space layout, transfers large plane moment load to the contact surfaces of the two side cams, reduces the load of a hydraulic actuating mechanism, improves the stress distribution of each force-bearing transmission piece, enables the whole force-bearing frame to bear the pneumatic thermal load in an extreme state, has higher strength reserve and good rigidity, and meets the requirement of modal conversion and adjustment of the combined spray pipe.
2. The structure adopts a block-type force bearing component to jointly form a box-type frame structure, has the functions of supporting a nozzle turbine and a stamping double-channel runner, bearing and transmitting double-channel pneumatic loads, and realizes the conversion of the turbine runner and the stamping runner by stepless regulation of a hydraulic actuating mechanism on the nozzle runner, thereby meeting the use requirement of an engine on full envelope.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a cantilever force-bearing device for a combined nozzle of the present invention;
fig. 2 is another structural schematic diagram of the cantilever force bearing device for the combined nozzle of the invention.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
Referring to fig. 1 and 2, the disclosed embodiment provides a cantilever force-bearing device for a combined nozzle, which comprises a middle adjusting plate left force-bearing frame 1, a middle adjusting plate right force-bearing frame 2, the inner sides of the middle adjusting plate left bearing frame 1 and the middle adjusting plate right bearing frame 2 are respectively provided with a first middle adjusting plate force transmission frame 3-1 and a second middle adjusting plate force transmission frame 3-2, a third middle adjusting plate force transmission frame 4 is arranged between the first middle adjusting plate force transmission frame 3-1 and the second middle adjusting plate force transmission frame 3-2, the shapes of the middle adjusting plate left bearing frame 1, the middle adjusting plate right bearing frame 2, the first middle adjusting plate force transmission frame 3-1, the second middle adjusting plate force transmission frame 3-2 and the third middle adjusting plate force transmission frame 4 are all conical, and the middle adjusting plate left bearing frame, the middle adjusting plate right bearing frame, the first middle adjusting plate force transmission frame, the second middle adjusting plate force transmission frame 3-2 and the third middle adjusting plate force transmission frame 4 are fixedly connected through bolts to form a force transmission frame base body; the awl bottom of middle regulating plate left side bearing frame 1, middle regulating plate right side bearing frame 2 all sets up the binaural seat for with quick-witted casket fixed connection, the awl bottom of third middle regulating plate power transmission frame 4 sets up the monaural seat, is used for with quick-witted casket fixed connection.
In order to facilitate the inclination of adjustment load frame, in a preferred embodiment, the awl bottom of regulation plate power transmission frame 4 all sets up cam adjustment mechanism in the middle of middle regulation plate left side load frame 1, middle regulation plate right side load frame 2 and the third, cam adjustment mechanism is including seting up the arc that 4 awl bottoms of regulation plate power transmission frame were led to in the middle of middle regulation plate left side load frame 1, middle regulation plate right side load frame 2 and the third leads to the groove, the inslot that leads to of arc sets cam 8, cam 8 passes through the drive arrangement drive, in order to adjust the inclination of load frame.
In the above embodiment of the invention, the cantilever force-bearing device is specifically a middle adjusting plate cantilever force-bearing frame structure for variable-state adjustment of a parallel-type combined spray pipe of a turbine stamping combined engine, in the structure, a middle adjusting plate right force-bearing frame 2, a middle adjusting plate left force-bearing frame 1, a first middle adjusting plate force-transmitting frame 3-1, a second middle adjusting plate force-transmitting frame 3-2 and a third middle adjusting plate force-transmitting frame 4 are sequentially connected through long bolts to form a frame base body, wherein the first middle adjusting plate force-transmitting frame 3-1, the second middle adjusting plate force-transmitting frame 3-2 and the third middle adjusting plate force-transmitting frame 4 bear core flow aerodynamic loads and transmit the core flow aerodynamic loads to two sides, double-lug seats are adopted at the front ends of the middle adjusting plate right force-bearing frame 2 and the middle adjusting plate left force-bearing frame 1 and mainly bear loads from the force-transmitting frames and cam mechanism loads, and transfers the load to the case through the ear mount. Each force transmission component adopts a block type structure, the processing cost and the difficulty are greatly reduced on the premise of ensuring the function, the force bearing components are connected by adopting long bolts, and enough thermal expansion gaps are reserved according to thermal matching analysis, so that the thermal stress concentration is avoided.
The invention fully considers the design of a force transmission path, the design of thermal matching, the design of a process and the design of weight reduction. According to the spatial layout of the cam adjusting mechanism, a force transmission path from back to front and from the middle to two sides of the whole force bearing frame is determined, the problem that the strength and the rigidity of a middle adjusting plate are insufficient is solved by optimizing the force transmission path, and the requirement of the mode conversion function of the turbine stamping combined engine is met.
Further preferably, the device further comprises an upper bearing plate 5 and a lower bearing plate 6, wherein the upper bearing plate 5 and the lower bearing plate 6 are respectively fixed at the top and the bottom of the bearing frame. The upper bearing plate 5, the lower bearing plate 6 and the bearing frame base body are connected and fixed by bolts to jointly form a box type frame structure, and the rigidity of the bearing frame is enhanced.
Further preferably, the adjustable-type solar cell module further comprises a plurality of middle adjusting plate bearing frames tail edges 7, wherein the middle adjusting plate bearing frames tail edges 7 are fixedly connected with the conical tails formed by the upper bearing plates 5 and the lower bearing plates 6 respectively. And the tail edges 7 of the two adjacent middle adjusting plates are fixedly connected. The tail edges 7 of the middle adjusting plate bearing frames are connected through bolts and then fixedly connected with the box-type frame structure through two rows of bolts, so that the strength of the tail end of the cantilever frame structure is enhanced, and warping and deformation under high-temperature and high-pressure pneumatic load are relieved.
In another preferred embodiment, the tail edge 7 of the bearing frame of the middle adjusting plate is provided with a plurality of through holes for fixing the heat insulating layers of the stamping channel and the turbine channel and preventing the heat insulating layers from deforming.
In order to further improve the rigidity and the strength of the cantilever force bearing device, the first middle adjusting plate force transmission frame 3-1, the second middle adjusting plate force transmission frame 3-2 and the third middle adjusting plate force transmission frame 4 are of fishbone structures, and the fishbone structures of the first middle adjusting plate force transmission frame 3-1, the second middle adjusting plate force transmission frame 3-2 and the third middle adjusting plate force transmission frame 4 are arranged in a staggered mode. And a plurality of reinforcing ribs are arranged on the middle adjusting plate left bearing frame 1 and the middle adjusting plate right bearing frame 2. The inner cavities at the two sides of the left and right bearing frames adopt oblique reinforcing ribs to fixedly support the outline profile, so that the bearing frame is ensured to have enough strength and rigidity.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a cantilever force-bearing device for making up spray tube, its characterized in that, includes middle regulating plate left side bearing frame, middle regulating plate right side bearing frame, the inboard of middle regulating plate left side bearing frame, middle regulating plate right side bearing frame sets up regulating plate force-transfer frame in the middle of first and second respectively, set up the middle regulating plate force-transfer frame of third between regulating plate force-transfer frame in the middle of first and the second, the appearance of middle regulating plate left side bearing frame, middle regulating plate right side bearing frame, first middle regulating plate force-transfer frame, second middle regulating plate force-transfer frame and the middle regulating plate force-transfer frame of third all is the toper, and fixed connection each other constitutes bearing frame base member; the awl bottom of the left bearing frame of middle regulating plate, the right bearing frame of middle regulating plate all sets up the binaural seat for with quick-witted casket fixed connection, the awl bottom of the regulating plate dowel frame sets up the monaural seat in the middle of the third, be used for with quick-witted casket fixed connection.
2. The cantilever force-bearing device for the combined nozzle of claim 1, further comprising an upper force-bearing plate and a lower force-bearing plate, wherein the upper force-bearing plate and the lower force-bearing plate are respectively fixed on the top and the bottom of the force-bearing frame base body.
3. The cantilever force-bearing device for the combined nozzle of claim 2, wherein the cone bottoms of the middle adjusting plate left force-bearing frame, the middle adjusting plate right force-bearing frame and the third middle adjusting plate force-transmitting frame are respectively provided with a cam adjusting mechanism, the cam adjusting mechanism comprises arc-shaped through holes arranged at the cone bottoms of the middle adjusting plate left force-bearing frame, the middle adjusting plate right force-bearing frame and the third middle adjusting plate force-transmitting frame, a cam is arranged in each arc-shaped through hole, and the cam is driven by a driving device to adjust the inclination angle of the force-bearing frame base body.
4. The cantilever force-bearing device for the combined nozzle of claim 3, further comprising a plurality of middle adjusting plate force-bearing frames trailing edges, wherein the middle adjusting plate force-bearing frames trailing edges are respectively fixedly connected with the conical tops of the conical structures enclosed by the upper force-bearing plate, the lower force-bearing plate and the force-bearing frame base body.
5. The cantilever force-bearing device for the combined nozzle as claimed in claim 4, wherein the trailing edges of two adjacent intermediate adjusting plates are fixedly connected.
6. The cantilever force-bearing device for the combined nozzle as claimed in claim 5, wherein the trailing edge of the intermediate adjusting plate force-bearing frame is provided with a plurality of through holes for fixing the heat-insulating layer of the stamping channel and the turbine channel.
7. The cantilever force-bearing device for the combined nozzle of claim 1 or 6, wherein the first, second and third intermediate adjusting plate force-transmitting frames are fishbone-shaped, and the fishbone structures of the first, second and third intermediate adjusting plate force-transmitting frames are arranged in a staggered manner.
8. The cantilever force-bearing device for the combined nozzle as claimed in claim 7, wherein the left force-bearing frame of the middle adjusting plate and the right force-bearing frame of the middle adjusting plate are respectively provided with a plurality of reinforcing ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988326.5A CN112267955B (en) | 2020-09-18 | 2020-09-18 | Cantilever force bearing device for combined spray pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988326.5A CN112267955B (en) | 2020-09-18 | 2020-09-18 | Cantilever force bearing device for combined spray pipe |
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| CN112267955A true CN112267955A (en) | 2021-01-26 |
| CN112267955B CN112267955B (en) | 2021-09-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685272A (en) * | 2021-10-26 | 2021-11-23 | 中国航发四川燃气涡轮研究院 | Asymmetric round-square-turning casing with large-size thin wall |
| CN113700572A (en) * | 2021-10-28 | 2021-11-26 | 中国航发四川燃气涡轮研究院 | Lateral combined movement sealing structure for convergence section of binary vector nozzle |
| CN115387906A (en) * | 2022-05-12 | 2022-11-25 | 中国航发四川燃气涡轮研究院 | Air inlet bearing frame connecting structure of engine with low inlet hub ratio and assembling method |
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| CN109408993A (en) * | 2018-11-02 | 2019-03-01 | 厦门大学 | The design method of the turbofan punching press combined engine of rocket built in a kind of outer culvert |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113685272A (en) * | 2021-10-26 | 2021-11-23 | 中国航发四川燃气涡轮研究院 | Asymmetric round-square-turning casing with large-size thin wall |
| CN113685272B (en) * | 2021-10-26 | 2021-12-24 | 中国航发四川燃气涡轮研究院 | Asymmetric round-square-turning casing with large-size thin wall |
| CN113700572A (en) * | 2021-10-28 | 2021-11-26 | 中国航发四川燃气涡轮研究院 | Lateral combined movement sealing structure for convergence section of binary vector nozzle |
| CN115387906A (en) * | 2022-05-12 | 2022-11-25 | 中国航发四川燃气涡轮研究院 | Air inlet bearing frame connecting structure of engine with low inlet hub ratio and assembling method |
| CN115387906B (en) * | 2022-05-12 | 2024-04-16 | 中国航发四川燃气涡轮研究院 | Air inlet bearing frame connecting structure of low inlet hub ratio engine and assembling method |
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|---|---|
| CN112267955B (en) | 2021-09-10 |
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